A new flavan-3-ol from Artocarpus nitidus subsp. lingnanensis

Area of Science:

• Phytochemistry
• Natural Product Chemistry
• Organic Chemistry

Background:

• Artocarpus species are known sources of bioactive compounds.
• Flavan-3-ols are a significant class of plant secondary metabolites with diverse biological activities.
• Previous research on Artocarpus species has identified various flavonoids and related compounds.

Purpose of the Study:

• To isolate and characterize chemical constituents from the stems of Artocarpus nitidus subsp. lingnanensis.
• To identify novel compounds and known compounds from the plant extract.
• To elucidate the structures of isolated compounds using spectroscopic methods.

Main Methods:

• Phytochemical investigation of Artocarpus nitidus subsp. lingnanensis stems.
• Isolation of compounds using chromatographic techniques.
• Structure elucidation of isolated compounds via spectroscopic data (e.g., NMR, MS).

Main Results:

• A new flavan-3-ol, designated artoflavanocoumarin, was isolated and characterized.
• Three known compounds, (+)-catechin, (+)-afzelechin 3-O-α-L-rhamnoside, and (+)-catechin 3-O-α-L-rhamnoside, were also identified.
• The structures of all isolated compounds were confirmed through comprehensive spectroscopic analysis.

Conclusions:

• The stems of Artocarpus nitidus subsp. lingnanensis contain a unique flavan-3-ol, artoflavanocoumarin.
• This study expands the knowledge of the chemical diversity within the Artocarpus genus.
• The findings contribute to the understanding of natural products chemistry and potential sources for drug discovery.